Could any body help me with this low rpm knock ?
it seems to happen frequently at 2180-2200 rpm
What caused this low rpm knock ?
Could any body help me with this low rpm knock ?
it seems to happen frequently at 2180-2200 rpm
EFILive Tuner
You have several issues.
1. You are attempting to tune with incredibly high IAT's and your ECT's normal temperature are well over 200F. I understand your climate is hot, but fuel tends to detonate very easy when you have such incredibly high DYNAIRTMPS. You need to lower both your ECT (thermostat) and IAT's when attempting to tune.
2. I don't understand your B3605. Why are you commanding such lean AFR's, especially when it is hot.
3. Your actual AFR's (wideband) are way too lean. I would assume Table B0101 needs re-worked.
4. Why not run COS3. You are a perfect candidate for Trims. From your post(s) you have been attempting to tune AUTOVE for several months. I would not risk running so much KR on that engine. Do you have to run OLSD?
Overall, you are just way too lean...
WeathermanShawn I did not touch the commanded AFR when in open loop i think my tuner put it the way it is
you stated that i'm too lean in which map you noticed this because when i'm doing the AutoVe i check each time the Wide band map and try to reach as close as possible to 14.63 and it looks good now
what do you think i should fix first ?
EFILive Tuner
First, Wesam don't take my opinions or criticisms to personal. Tuning is not easy. OLSD is very challenging to get correct on the first few attempts. So, here is my best analysis.Originally Posted by wesam
Note: I am assuming your Wideband AFR (serial) is as indicated on your log..
Attachment 8330Attachment 8331
Attachment (1): You are several AFR points richer than Commanded AFR. That is a very significant offset.
Attachment (2): Your Non-PE Commanded AFR vs Actual. You are several points leaner than Commanded AFR.
I would ask the EFILive Tuning community for their opinion(s). It just looks like your overall B0101 is not correct. Whether the Table has been overly smoothed, or not filtered as accurately as possible..it is hard to say. When I look at your overall AFRBENS..they really seem way off.
.Attachment 8332
Perhaps others can suggest whether going to a COS3 would be better for you. Its harder to adjust for temperature bias without a COS, and you can utilize ST Trims with some of the newer COS's.
I suppose if you stay with your current tune, what about just using the Commanded AFR Values in the AUTOVE. Perhaps you have had conflicting advice..so let hear from others.
ok i will use the values of the B3605 in the AUTOVE
and also i want to know what advantages i will have if i go to COS3 over COS1 ?
do i need to tune every thing from scratch ?
sorry for th noobe Questions
EFILive Tuner
Wesam:
I'm kinda hoping 5.7ute or Joecar or others will jump in. Everybody, including me have been a little busy lately.
I believe COS3 will allow you much greater flexibility to adjust how the VE Table values react to ambient temperatures. Especially in your climate. I know it also allows you to run dual-spark tables. I'm not sure if COS1 does or not.
For my perspective, if you were to utilize Trims for several runs it would help. You could use those to tweak your VE Table. You can always go back to straight open-loop at any point.
So, stand-by and we will see if we can get a COS3 expert to help you out...
one last question until joecar and ute5.7 step in
my B3605 data is shown in units of lamda how could i change the data units to AFR or EQV as in the picture you sent ?
EFILive Tuner
In the Tune Tool..under EDIT..Properties.
There is a pop-up that lets you change units....
thanks Seani will do the commanded fuel in open loop as in the autove tutorial and waiting for others to step in
EFILive Tuner
I changed the B3605 as in the AUTOVE tutorial and took a short run
ummm for some reason the car is running rich now but it seem that the knock is gone and the AFR is steadier
what that mean ?
i inserted the new log file
EFILive Tuner
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